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PI74FCT191T Fiches technique(PDF) 4 Page - Pericom Semiconductor Corporation |
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PI74FCT191T Fiches technique(HTML) 4 Page - Pericom Semiconductor Corporation |
4 / 6 page 4 PS2084B 01/13/97 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT191T (25 Ω Ω Ω Ω Ω SERIES) PI74FCT2191T 4-BIT BINARY COUNTERS Power Supply Characteristics Parameters Description Test Conditions (1) Min. Typ (2) Max. Units ICC Quiescent Power VCC = Max. VIN ≥ VHC; 0.1 500 µA Supply Current Freq = 0 VIN ≥ VLC ∆ICC Supply Current per VCC = Max. VIN = 3.4V (3) 0.5 2.0 mA Input @ TTL HIGH Freq = 0 ICCD Supply Current per VCC = Max., VIN = VCC 0.15 0.25 mA/ Input per MHz (4) Outputs Open VIN = GND MHz and Enabled One Bit Toggling 50% Duty Cycle, other input at GND or VCC Ic Total Power Supply Vcc=Max., Outputs Open VIN = Vcc — 0.8 2.3 mA Current(6) Preset Mode VIN = GND PL=CE=U/D=CP=GND One Bit Toggling VIN = 3.4V — 1.0 3.3 at fi = 5MHz VIN = GND 50% Duty Cycle Vcc=Max., Outputs Open VIN = Vcc — 3.0 6.0(5) Preset Mode VIN = GND PL=CE=U/D=CP=GND Four Bits Toggling VIN = 3.4V — 4.0 10.0(5) at fi = 5MHz VIN = GND 50% Duty Cycle Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 5.0V, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested. 6. IC =IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI) ICC = Quiescent Current ∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fI = Input Frequency NI = Number of Inputs at fI All currents are in milliamps and all frequencies are in megahertz. |
Numéro de pièce similaire - PI74FCT191T |
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Description similaire - PI74FCT191T |
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